This is a very crucial thing to do. You need to know how much you want to carry. While every travel that one undertakes is not going to be same, it is possible to average it out. Once this is done, you can know what exactly you need to buy. Do you need a suitcase, do you need a overnight bags, backpacks or something else. You will also need accessories like travel wallets, to making organization easier for you. Unless you understand your requirements, it is not possible to know what you need exactly. Understanding the requirements also includes your brand preference. You may decide to get Qantas luggage or some other brand. No matter which brand you purchase, make sure that you find everything about the product that you intent to buy and spend time pondering if it is indeed the right fit for you. Luggage and travel gear are purchased rarely.